K. Kudelina, T. Vaimann, A. Rassõlkin, A. Kallaste, B. Asad, G. Demidova
{"title":"Induction Motor Bearing Currents - Causes and Damages","authors":"K. Kudelina, T. Vaimann, A. Rassõlkin, A. Kallaste, B. Asad, G. Demidova","doi":"10.1109/IWED52055.2021.9376354","DOIUrl":"https://doi.org/10.1109/IWED52055.2021.9376354","url":null,"abstract":"Bearing damages make the biggest proportion of faults affecting AC electrical motors. There are various subdivisions of the bearing faults but one of them is the induced bearing and shaft currents in the machines. These currents cannot be fully avoided, yet with the development of power electronic control of the machines, the number of machines affected by potentially more dangerous and damaging frequency converter induced bearing and shaft currents is growing rapidly. This paper is opening the background of the nature and types of bearing currents, lists the damages inflicted by these currents and addresses problem as well as stresses the necessity of taking those currents into account for ensuring more efficient and longer lifespan of industrial electrical machines.","PeriodicalId":366426,"journal":{"name":"2021 28th International Workshop on Electric Drives: Improving Reliability of Electric Drives (IWED)","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126907526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yulia Kazemirova, A. Chepiga, A. Anuchin, M. Lashkevich, Alexey Kovyazin, Egor Kulik
{"title":"Feedforward Control of an Active Front End in Cascaded Medium Voltage Frequency Converter","authors":"Yulia Kazemirova, A. Chepiga, A. Anuchin, M. Lashkevich, Alexey Kovyazin, Egor Kulik","doi":"10.1109/IWED52055.2021.9376397","DOIUrl":"https://doi.org/10.1109/IWED52055.2021.9376397","url":null,"abstract":"The frequency converters with the cascaded low-voltage multi-cell topology are the most common solution for the medium voltage drives. The considered topology contains active front end in each cell of the converter, which improves harmonic composition at the input, provides unity power factor and bidirectional power flow. However, each cell of the converter works with the periodical load due to the fact that it feeds only a single phase of the medium voltage motor. This periodical load causes the undesired voltage ripple in the DC link. This paper proposes voltage-oriented control system for the active front end of the low-voltage cell utilizing feedforward control. The proposed control system balances the input currents and minimizes the DC link voltage ripples. The simulation results show operation of voltage-oriented control system and the positive impact of the feedforward control.","PeriodicalId":366426,"journal":{"name":"2021 28th International Workshop on Electric Drives: Improving Reliability of Electric Drives (IWED)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122551964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Efficiency Analysis of Resonant Circuits in High-Power Converters of Electrical Energy with Soft Switching Mode","authors":"I. Voronin, P. Voronin, O. Osipov","doi":"10.1109/IWED52055.2021.9376381","DOIUrl":"https://doi.org/10.1109/IWED52055.2021.9376381","url":null,"abstract":"The paper presents a composite resonant switching method that provides soft switching at zero current and zero voltage. A comparative analysis of the efficiency and the advantages of using a new composite resonant method over the basic options of soft switching in high-power converters of electrical energy are shown. The energy balance method has been used to evaluate the quantitative indicators of the circulating energy between the resonant circuit, the power supply and the load.","PeriodicalId":366426,"journal":{"name":"2021 28th International Workshop on Electric Drives: Improving Reliability of Electric Drives (IWED)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127026561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Parameter Identification of Induction Motor Drives","authors":"A. Khitrov, A. Khitrov, K. Kurnikov","doi":"10.1109/IWED52055.2021.9376382","DOIUrl":"https://doi.org/10.1109/IWED52055.2021.9376382","url":null,"abstract":"The technique of absolute parameter identification of the squirrel cage induction motor electromechanical model is considered. The technique for energy-efficient operating mode of various motor series of domestic and foreign manufacturers is based on the known relative parameters of the equivalent circuit for 4A series. The considered technique can be applied in simulation systems and in setting the parameters of the vector frequency control systems of electric drives.","PeriodicalId":366426,"journal":{"name":"2021 28th International Workshop on Electric Drives: Improving Reliability of Electric Drives (IWED)","volume":"2007 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130633337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Influence of an Electric Drive with Periodic Load on Voltage Quality","authors":"A. Ziuzev, A. Nakataev, S. Shelyug, V. Ippolitov","doi":"10.1109/IWED52055.2021.9376368","DOIUrl":"https://doi.org/10.1109/IWED52055.2021.9376368","url":null,"abstract":"The paper presents a computer simulation of the operation of three independent electric drives with a periodic load, connected to a common power supply network. Two cases are considered - operation of electric drives in one phase and in different phases. An analysis of their impact on the electrical supply network is carried out, the results are compared with the permissible Russian standards. An analytical optimization method based on the analysis of power graphs of electric drives with periodic load was considered. The article contains an overview of possible methods for regulating the working phase of the mechanism.","PeriodicalId":366426,"journal":{"name":"2021 28th International Workshop on Electric Drives: Improving Reliability of Electric Drives (IWED)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115599375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Improving Sucker-rod pump energy efficiency through electric drive movement control","authors":"D. Vishnyakov, E. Solodkiy, S. Salnikov","doi":"10.1109/IWED52055.2021.9376317","DOIUrl":"https://doi.org/10.1109/IWED52055.2021.9376317","url":null,"abstract":"The article describes design of sucker-rod pump position controller, which regulates the coordinates of the polished rod movement along a pre-determined trajectory through the adjuster of speed regulator. Proposed control technique intend to achieve better energy efficiency of unit. The principles of energy efficient control technique by defining the rod string suspension point coordinates according to the harmonic law are shown. For quantitative assessment of the energy-efficiency of proposed coordinate control system the simulation of complex sucker-rod pump model was done. The efficiency of proposed control technique for the sucker-rod pump were confirmed by the simulation results.","PeriodicalId":366426,"journal":{"name":"2021 28th International Workshop on Electric Drives: Improving Reliability of Electric Drives (IWED)","volume":"85 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113940796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Holistic Rotor Position Sensor System Characterization for Automotive Powertrains","authors":"Christoph Datlinger, M. Hirz, A. Anuchin","doi":"10.1109/IWED52055.2021.9376380","DOIUrl":"https://doi.org/10.1109/IWED52055.2021.9376380","url":null,"abstract":"Electrified automotive traction drives require precise, reliable and efficient control in order to meet operational safety-, comfort- and efficiency demands. In this context, sensor systems are utilized to determine the current rotor shaft position of Permanent Magnet Synchronous Motors, whereby potential measurement deviations may have impact on the quality of motor control. Since the integration involves functional-, reliability- and space requirements, various measurement principles and sensor system technologies are available (e.g. resolver, inductive or Hall-based). Identification of potential error sources in the holistic sensor measurement chain is vital to provide an accurate determination of the rotor shaft position under real-time conditions. In this context, the present paper introduces a generic procedure for holistic angular error characterization of rotor position sensor systems in Permanent Magnet Synchronous Motor-based powertrains. The presented approach includes an examination of state-of-the-art rotor position sensor systems and their potential arising errors, which can lead to a distortion of the angular information. Besides a consideration of mechanical deviations and thermal influences, special focus is put on sensor signal processing to elaborate origins of potential errors in a high level of details. The introduced methodology is exemplary applied in the course of experimental-based error characterization for an arbitrary rotor position sensor system.","PeriodicalId":366426,"journal":{"name":"2021 28th International Workshop on Electric Drives: Improving Reliability of Electric Drives (IWED)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122457647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. S. Ghahfarokhi, Andrejs Podgornovs, A. Kallaste, T. Vaimann, A. Belahcen, A. M. Marques Cardoso
{"title":"Oil Spray Cooling with Hairpin Windings in High-Performance Electric Vehicle Motors","authors":"P. S. Ghahfarokhi, Andrejs Podgornovs, A. Kallaste, T. Vaimann, A. Belahcen, A. M. Marques Cardoso","doi":"10.1109/IWED52055.2021.9376390","DOIUrl":"https://doi.org/10.1109/IWED52055.2021.9376390","url":null,"abstract":"This paper presents a survey about implementing hairpin winding with an oil spray cooling system on the new generation of electrical vehicle (EV) motors as an option to produce high power density, high efficiency, cost-effectiveness, lightweight, reliable EV motors. It provides the advantages and drawbacks of this rectangular winding compared to random winding and considers the hairpin winding production aspects. According to the high AC losses of this configuration, the paper considers two conventional approaches for calculating these losses with their advantages and drawback. Then it proposes the novel hybrid FEA method for calculating the AC copper losses to overcome the weaknesses of analytical and numerical methods. Finally, it provides a holistic view related to the oil spray cooling of the electrical machine and points the future work associated with this cooling method","PeriodicalId":366426,"journal":{"name":"2021 28th International Workshop on Electric Drives: Improving Reliability of Electric Drives (IWED)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131207069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Determining Specific Power Loss in Joint Area of Laminated Magnetic Core","authors":"Y. Kalinin, A. Chivenkov, Y. Vagapov, A. Anuchin","doi":"10.1109/IWED52055.2021.9376379","DOIUrl":"https://doi.org/10.1109/IWED52055.2021.9376379","url":null,"abstract":"This paper discusses the method of analysis of specific power loss in the joint area of steel laminated core. The method is based on comparison of power loss data obtained from the tests of a circular shape magnetic core. Initially, the core build using uncut (solid) lamination sheets was tested to obtain the loss reference values. Then the laminations were cut onto four sections, and the core was tested again to obtain the loss increase associated with the implemented joint area. The test readings were processed to separate losses due to tangential and normal fluxes in the laminates. The processed data represented as relative p.u. values of increase in specific power loss have been extended to conduct an analysis of a rectangular magnetic core made using anisotropic, grain-oriented silicon electrical steel. The results demonstrated that the power loss produced by the normal magnetic flux dominates in the structure of total power loss in the rectangular core (approx. 85%). The proposed approach utilises the septation of losses produced by tangential and normal fluxes; it can be applied for the analysis of loss in the joint areas of magnetic cores of various power transformers.","PeriodicalId":366426,"journal":{"name":"2021 28th International Workshop on Electric Drives: Improving Reliability of Electric Drives (IWED)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128765712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Demidova, A. Rassõlkin, T. Vaimann, A. Kallaste, J. Zakis, A. Suzdaļenko
{"title":"An Overview of Fuzzy Logic Approaches for Fault Diagnosis in Energy Conversion Devices","authors":"G. Demidova, A. Rassõlkin, T. Vaimann, A. Kallaste, J. Zakis, A. Suzdaļenko","doi":"10.1109/IWED52055.2021.9376389","DOIUrl":"https://doi.org/10.1109/IWED52055.2021.9376389","url":null,"abstract":"Any energy conversion devices, such as industrial motor-drives, propulsion drives of electric vehicles, pump systems, wind turbines, and others, are prone to failures. Usually, failures result in increased economic costs that come through additional energy losses, loss of production, or in a worst-case even environmental hazard. To prevent failures, energy conversion systems may be checked through particular routines developed and specified by the manufactures. However, it may be challenging due to the complex construction of energy conversion devices or devices' failure between the routine checks. Such schedule-based condition monitoring approaches provide minor information on the remaining lifetime (separate components and whole system) of the devices and do not allow proper prognostic or full exploitation. To overcome traditional two-level Boolean approaches with healthy/faulty states an Artificial Intelligence (AI)-based control techniques are used. The Fuzzy Logic approach is based on inspired by human perception processes and cognition that are often uncertain or empirical. However, Fuzzy Logic is already successfully applied in various control applications of energy conversion devices, even when the analytical models are unknown. This paper argues for developing new fault detection algorithms based on fuzzy logic methods to allow energy conversion systems designers to develop reliability factors for apparatus, which included electrical machines and power electronics subsystems.","PeriodicalId":366426,"journal":{"name":"2021 28th International Workshop on Electric Drives: Improving Reliability of Electric Drives (IWED)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131027082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}